Compa



A. J. ALUSON.

BEATER ROLL,

APPUCATION FILED FEB. 25,1919. mwfim. Emma Oct. 14,1919.

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IN V EN TOR.

A TTORNEYS.

j. ALLESGN.

HEATER ROLL. APPLICATI'JN man FEB. 25. 1919.

Pateme @ct. 1 1, 1919.

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I BEATE'R Ron; APPucm'ou min FEB. 25. leis;

Patented Oct. 14,1919.

3 SHEETS-SHEET 3- INVENTOR.

v trams .srarns PATENT OFFICE.

' I "ALBERT J. ALLIson, or mwromonro; ASSIGNOR TO THE A. A. snvronns &SON

4 1 COMPANY, or DAYTON, OHIO, A CORPORATION OF OHIO.

ZhrzZZ-gvhmnfit may) concern: 'Be. it known that I, ALBERT J. ALLISON,

residing atDayton, county of Montgomery,

,and Stateaof 'Ohio, have invented certain new and useful- Improvementsin Beater- Rolls,:of which -thefollowing is a full, clear,

and exact description.

5 My invention relates to the class of beater rolls, wherein the flybarsare secured to the roll by resilient clamping devices. The first ofthis class of rolls was disclosed in my Patent No. 1,273,982, issuedJuly 30, 1918,

Whereinan embodiment of the principle Was broadly-claimed.= In myapplication now pending, Serial No. 233,791, filed July '21, 1917, Ihave disclosed another embodiment of the principle, which is an improveme'nt over the first in that each bar is secured to the' roll by aseparate clamping, device that permits any bar to' be removedand-replaced without loosening or in any way disturbing the other barsin the roll. In the present invention I provide for securing :the barseither inpairs or singly. -W'l1en secured singly any bar can be removedand replaced without disturbing any of the other bars; in theconstruction where they are'secured in pairs there is a single fasteningdevice at each end of each pair of bars, each device securing one end ofboth bars- Provision ism'ade for equalizing the tension 'onfthe'bars ofa pair so that both will beheld by aneq'ual tension.

Whether secured singly or in pairs, the securing means is a clampingelement or lever partaking of the nature of a beam supported at twopoints, with the bar or barsattached to the beam at a third point, thebeam being put under a strain which reflects it more or less, so thatthe bar is heldto its seat by the resiliency of the beam. Although myinvention is intended, pr

' rolls of certain types.

"marily for use in building new beating engines,-it is peculiarlyadapted to use in old In oneyof these types, one in very common use, theends of the fly bars are notched and are secured to the roll byironrings heated and dropped into the circle of notches, thering beingexpected equal number of bars.

BEATER-ROLL.

Specification of Letters Patent. Patented Oct, 14 1919, *Applieationfiled February 25', 1919. Serial No. 279,161.

to shrink and draw the bars tightly to their ,seats, which are usuallyslots formed in the other changes than replacing the old bars by newones, or even using the old bars in some cases, these old rolls can beequipped with my improvement and endowed with all of the advantagesitpossesses. The form of device by which the bars are secured in pairs hasall of the merits of the single device, besides being far lessexpensive. It is preferable, therefore, to build rolls with an Among oldrolls an uneven number of bars is Ioften found, in which case one barcan be secured singiyand the remainder in pairs. reason it is foundexpedient to do so two or more of'the bars maybe secured singly and theremainder in pairs.

In the accompanying drawings,

Figure 1 is a longitudinal section of a roll equipped with myin'iprovement, showing the type wherein the bars are secured in pairs.

' Fig. 2 is a portion of a transverse section On line 2. of Fig. 1.

Fig. 3 is a. fragmcntal view looking between two fly bars toward theshaft. c

Fig. 4; is a longitudinal section of a roll equipped with a modifiedform of my device for securing the bars in pairs.

Fig. 5 is a portion of a transverse section on line 5 of Fig. 4.

line 9, Fig.

If for any,

Fig. 10 is a fragmental view looking in between the bars toward theshaft.

Fig. 11 is a longitudinal sectional view of one end'of a roll showinganother modification of my invention.

Referring now to Figs. 1, 2 and 3, the roll comprises a shaft 25 onwhich are rigidly fixed two heads 26, having inwardly extending flanges27. The' perimeter of the heads is provided'with seats for the fly bars28, in the present'case slots 29. Each of the bars is pierced near itsinner edge'a short distance from each end to provide apertures forbosses or trunnions 30 projecting from each side of levers 31. Inassembling the rolls two bars are placed in juxtaposition with a lever31 between them at each end and the trunnions in the apertures. With thelevers rocked to a position where they will be clear of the flanges 27as at A in Fig. 1 the bars are dropped into their respective seats. Eachlever carries a. set screw 32 at its head end which when the lever is inits normal position abuts the inside of the flange-27. When the lever isin the position shown at A this set screw can be turned in or out sothat the lever will lie in the desired position when the end of thescrew rests on its abutment, the screw being finally securedagainst-movement by a jam'nut 33.

As an abutment for the tail end of thelever I provide a yoke 40,carrying a set screw 41, the end of which stands in a socket 42 in thetail end of the lever. The yoke comprises a cup shaped member 43 capableof passing between the fly bars, and a cross piece, or the yoke proper,which lies crosswise and bears against the inner edges of the two bars.After the position of the lever has been fixed the yoke is let-downbetween the bars with the cross piece turned endwise, as at B, Fig. 1,the end of the set screw 41 entering the socket. The yoke is thenrotated one fourth of a turn, bringing it crosswise under the bars, andis held in this position while the set screw is screwed down, whichraises the yoke up against the bars and bears down on the tail end .ofthe lever. The ends of the cross piece are pro vided with lugs 44 whichlie at the outsides of the bars and together with the mem-' ber 4-3lying between the bars and the setscrew. in the socket form an interlockwhich 5 5- prevents the tail end of the lever from becoming disengagedfrom the .bars.

The heads of the set screws 41 .have transverse holes in which cotterpins 45 are inserted,

said pins lying in notches 46 in the rim of vent corrosion at this pointwhere acidulated Water might accumulate and stand.

7 The lever 31 is in the nature of a beamsupported at its ends, with a.load concentrated at a point intermediate its ends. Screwing down theset screw 41 flexes the lever more or less and puts a tension on thelateral projection which carries the trunnions 30, this tension drawingthe bars firmly to their seats. The resiliency of the lever maintainsthis tension constantly notwithstanding changes in conditions whichmight relax tension obtained by other means. For example: in the presentcase the fly bars are tapered in cross section, which makes flaringslots necessary in the heads, it being desirable that the .bars fitrather snugly in the slots. In case a bar is too snug it m ght not go atonce to the bottom of the slot, but do so later on. It is not to beunderstood that I expect my device to care for a large slip of thisnature or of any other kind. But because of the deflectionbf the leversand their resiliency, a small readjustment or settling .of the parts mayoccur without theirbecoming loose or their efliclency in any wayimpaired, where if they were secured by means which did not provide sucha reserve of clamping ower; e. 9., by bolts acting directly onthe arsand reacting directly on the heads, they might become lose. In fact,experience has shown that clamping devices which do not have thisreserve power are not reliable. Another factor in the stability of theclam-ping power of my device is its ability to equalize the strain onthe two bars. Both abutments for the lever being substantially merepoints,

acting in a common plane midway between I the bars, the lever is able torock one way or the other until both trunnionscarry an equal strain.Another factor which is to be :noted is thena hency of the barsthemselves. The extent to which this factor comes into play will dependon the relative rigidity of the bars and clamping elements.

In Figs. 4, and 6 the roll comprises the same shaft 25, heads 26,flanges 27,-bars 28, slots 29, trunnions 30 and levers 31, ex-

cept that the levers do not have the set screws at their head ends orsockets at their tail ends. In place of the former I tap holes 50 andscrew set screws 51. into the flanges 27. At the tail ends I provideyokes 52 which are pivotally attached to the levers." The bars areassembled in pairs with levers between them and dropped into their seatsin the manner already described, the

levers being rocked to a position where their head ends will clear theflanges27, as at A.

Then the levers are rocked to a position about as B, which permits theyoke, which has meanwhile been turned lengthwise of the lever, to beturned cross-wise. 51 are then screwed down until the yoke bears againstthe lower edges' of the bars 7 '12s The screws ,function in the mannerdescribed.

and the desired strain is put upon. the levers. While this type of clampmay be referred in some cases, the one shown in i s. 1, 2 and 3 ispreferable where an oldro l is be ing modified, because the work willgenerally be done in a place where the facilities for drilling the holeare not good. Therefore it 'is preferable to do the drilling in" thefactory, which can bedone where the clamps carry the set screws.

. In Figs. 7 to 10 inclusive is shown the device for securing the barssingly. This structure again comprises the shaft 25, heads 26,flanges27, fly bars 28 and slots 29. The levers I will now designate-bythe numeral and they are provided with bosses 61 and 62 which extendinto suitable apertures in the bars. Inasmuch as the strain is notbalanced. in this structure as it is in the two previously describedstructures, I secure the levers to the bars by cap screws 63 screwedinto the bosses 61. In assembling the roll a bar is set inplace, andthen the lever is put in, place and secured with the cap screw. Then bymeans of the set screws 64 the desired strain is put'upon the levers,the efiect of which is the same as has been" described. That is, thelever isin effect a beam resting at both ends and carry ing aconcentrated load intermediate its ends, at the iug 61. The lugs aremade loose enough in the apertures so the lever can The set screws 64have extensions65; I drive the usual wood fillers 66 between the bars,pro- \iding suitable holes through which the screwspass, and giveadditional security to the fillers by screwing nuts 67 on the ends ofthe screws.

Reverting to Figs. 5 and 6, it will be seen that the left hand bar ineach of these figures 'issecured by the single device I have justdescribed, the remainder of the bars being secured in pairs. It isevident that tlu form shown in Figs. 1,2 and3 can also be used inconnection with the single device in equipping rolls which have anuneven number of bars. The heads 26 shown in the present application areof the" type commonly used in rolls whose fly bars are secured byironrings shrunk on the ends of the bars, previously referred toandsince this type of head lends itself excellently t0 the use of myimprovement I have employed it in the presentillustrations. It isevident, however, that this type of head is not essential to itssuccess. Other structures which afl'ord proper support for the bars andsuitable sions which might catch a'ndi'etain parts of the paper pulp iIn Fig. 11 I show a structure in winch a disk 70 ismounted on the shaft25, and instead of abutting the Liars the tail end of the lever 71 isdrawn down to ()iftOWillTl theperiphery of the disk by .a screw 72.

While I have disclosed the preferred embodiment oi" my invention, andthree modifications thereof, it is not to be supposed that I considerthat these exhaust the possibilities carrying abutments and seats forfly bars;

fly bars occupying said seats; clamping elements secured to the bars andconiprising members which bear on said abutn'lents, the bearing pointsof said abuti'nents being set screws whereby pressure may be applied tothe members that bear thereon to clamp the bars tot-heir seats. p

3. In a beater roll, supporting elen'ients carrying abutments and seatsfor fly bars; a pair of fly bars seated thereon, a clamping elementcomprising a lever having a trunnion extending from each side, one ofsaid trunnions entering an aperture in each bar, the lever being thusenabled to rock so as to bring its head end under one of said abutments,a yoke which spans'the bars and acts as an abutment for the tail end ofthe lever; and means tor-putting-the lever under va strain which throughreaction on the'two abutments holds the bars firmly to their seats.

4:. In a beater roll, supporting elements element comprisinga leverhaving atrun nion extending from each side, oneof said trunnionsentering an aperture in eachbar, the lever being thus enabled to rocksagas to bring its head end under one of said abutments, and a yokeadapted to span the two bars. having a set screw in the middle adaptedto enter asocket formed in the tail end of the lever and whereby thelever may be' put under a strain which draws the bars firmly to theirrespective seats.

5. In a beater roll, supporting elements carrying abutments and seatsfor fly bars; a pair of fly bars seated thereon, a 'amping elementcomprising a lever having a trunnion extending from each side, one ofsaid trunnions entering an aperture in each bar, the lever being thusenabled to rock so as to bring its head end under one of said abutments,the head end of the lever carrying a set screw whereby the position ofits tail end can be adjusted, said tail end being provided with asocket; a yoke which spans the bars and acts as an abutment for the tailend of the lever, and having a set screw whose end enters said socket,and means 'for locking the set screw.

6. In a heater roll, supporting elements carrying abutments and havingseats for fly bars; a pair of fly bars, a pair of levers between themand trunnioned thereto, one lever being near each end of the bars, sothat after the bars are in their respective seats the levers can berocked and their outer r0 ends brought to bear under the abutments;

and means for retaining the levers in position underthe a'butments andfor putting them under a strain which, reacting through the trunnions,holds the bars firmly to their 15 seats.

7. In a beater roll, a shaft, two heads rigidly fixed thereon, eachhaving an inwardly extending annular flange, the periphery of said headshaving slots to act as seats for fly bars; apair of fly bars, a pair oflevers between them, one near each end, attached to the bars bytrunnions, so that the levers can be rocked to a position permittingthem to clear the flanges on the heads as the bars are being put intheir seats, and then rocked to a position where their outer or headends impinge the inside of the flanges; yokes spanning the two bars andconfined between the inner edges of the bars and the 40 'tail ends ofthe levers; and meansfor putting the levers under a strain which bybearingon the flanges and yokes reacts on the bars and holds them totheirseats.

8. In a beater roll, supporting elements having seats for fly bars, flybars, clamping devices secured to the fiy bars, set screws 'in thesupporting elements which bear on said clamping devices and through themhold the bars to their seats, said set screws having outwardlyprojecting extensions, wood fillers driven between the bars, saidfillers having holes through which said extensions pass, and nutsscrewed thereon to cure the Wood fillers.

9. In a heater roll, a fly bar, a support having a seat for said bar, abeam, means for attaching the beam to the bar, two abutments on whichthe beam bears,, said abutments'being removed from the point at 60.which the beam is attachedtd the bar, one

of. the abutments being carried by the bar itself, and means for movingone of the abutments, thereby putting the beam under a strain whichreacts on the bar through for attaching the beam to the bar, twoabutments on which the beam bears, said abutments being at pointsremoved from the point at which the beam is attached to the bar, andmeans for moving one ofthe abut ments, thereby putting a strain on thebeam which reacts on the bar and holds it to its seat.

12. In a beater roll, a fly bar, a support having a seat for said, bar,a beann'means for attaching the beam to the bar, two abutments on whichthe beam. bears, said abutments being removed from the point at whichthebeam is attached to the bar, one of the, abutments being the bar itself,and means for putting the beam under a strain which reacts on the barthrough said attachment and holds it to its seat.

13. In a beater roll, two fly bars, a support having seats for saidbars, a beam, means for attaching the beam to the bars, two abutments onwhich the beam bears, said abutments being at points removed from thepoint at. which the beam is attached to the bars, and means for puttingthe beam under a strain which will react on the bars through saidattachment and hold the bars to their respective, seats, the abutmentsbeing so situated and the attachment of the beam to the bars of suchcharacter that the strain is enabled to equalize and act substantiallythe same on both bars.

14;. In a beater roll, two 'fiybars, a support having seats for saidbars, a beam, means for attaching the beam to the-bars, two abutmentsonwhich the beam bears, one of said abutmcnts being carried by the bar,and means for moving one of the abutments, thereby putting the beamunder a strain -which will react on the bars through said attachment andhold the bars to their respective seats.

15. A beater roll comprising a supporting element and fly bars spacedaround said element; means whereby a portion of said bars are secured tosaid element in pairs, each pair being attachable thereto and removabletherefrom without aifecting the security of disturbing any other bars;and means fer securing one or more of the barsto said element snugly, sothat said bar, or each bar if there are more than one,

Clui be attached thereto or removed therefrom without affecting thesecurity of or disturbing any other bar.

16. A beater roll comprising a supporting element and fly bars spacedaround said element; resilient means whereby a portion of said bars aresecured to said element in pairs, each pair being attachable thereto andremovable therefrom without affecting, the

10 security of 01' disturbing any of the other bars; and resilient meansfor securing one or more of the bars to said element snugly so that saidbars, or each bar if there are more than one, can be attached thereto orremoved therefrom without affecting the security of or disturbing anyother bar.

In testimony whereof I afiix my signature in the presence of twosubscribing witnesses.

ALBERT J. ALLISON. Witnesses:

F. K. FASSE'IT, J OSETH A. WORTMAN.

